摘要
利用阈值电压随温度的线性变化关系,设计并改进了一种基于弛张振荡器的全CMOS片上数字温度传感器,提出了一种新型的基于施密特触发器的全CMOS片上数字温度传感器,用于集成电路的热测试和温度保护.仿真结果表明,文中实现的两种数字温度传感器精度均在1℃以内,而且基于施密特触发器的温度传感器仅使用了19个晶体管,与多数文献的结果相比,晶体管数目至少节省了26·9%.
By utilizing the linear relationship between the threshold voltage of a MOS transistor and its temperature, an improved built-in digital temperature sensor, which is based on a relaxation oscillator, is provided, and a novel built-in digital temperature sensor,which is based on the Schmitt trigger,is developed for thermal test and the protection of integrated circuits. The simulation results show that the accuracies of the two types of the sensors are both within 1℃. Only 19 transistors are needed by the Schmitt trigger based temperature sensor,saving at least 26.9% of the number of transistors as compared with previous work.
基金
国家自然科学基金资助项目(批准号:90207001)~~
关键词
温度传感器
阈值电压
热可测试性
temperature sensor
threshold voltage； thermal testability
